SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    73, 92, 280, 507, 508, 510, 526, 527, 528, 
    529, 530, 5474, 504, 1855, 1853, 1854
  )

Query time 0.00065

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "table_name": "cscart_products",
      "access_type": "range",
      "possible_keys": ["PRIMARY"],
      "key": "PRIMARY",
      "key_length": "3",
      "used_key_parts": ["product_id"],
      "rows": 16,
      "filtered": 100,
      "index_condition": "cscart_products.product_id in (73,92,280,507,508,510,526,527,528,529,530,5474,504,1855,1853,1854)"
    }
  }
}